Electrical Systems-slo
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- 1.
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 2.What materials make a good insulator?
- A.
Copper and aluminum
- B.
Ceramic and plastic
- C.
Both A and B
- D.
None of the above
- 3.Tech A says a resistor is a component designed to extract energy from the current flow. Tech B says he uses a voltmeter to check for a voltage drop. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 4.Tech A says you must have power supply for a simple circuit to work. Tech B says a switch will interrupt. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 5.Volts, amps, and ohms are the three basic units of electrical measurement.
- A.
True
- B.
False
- 6.Tech A says AC stands for alternating voltage. Tech B says DC is used in electric motors on most hybrid vehicles. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 7.Tech A says an alternator has to have a transformer and a rectifier is used to produce DC volts. Tech B says you can run an AC motor on DC volts. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 8.Tech A says when you ground a circuit, you hook it back to the positive side of the battery. Tech B says some manufactures use the chassis as a return path to the battery. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 9.Tech A says high resistance causes an increase in current flow. Tech B says a voltage drop is another name for high resistance. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 10.Electrochemical energy is produced when:
- A.
The sun shines on photocells.
- B.
The steam builds.
- C.
When two dissimilar metals are heated.
- D.
Two dissimilar metals are immersed in an acidic liquid.
- 11.Ohm's law tells us that it takes 1 volt to push 1 amp through how many ohms?
- A.
1
- B.
2
- C.
3
- D.
4
- 12.In calculating ohm's law:
- A.
R stands for resistance.
- B.
A stands for amps.
- C.
V stands for voltage.
- D.
All of the above
- 13.You have a 4 ohm resister and the battery is charged to 12 volts. How many amps will flow in the circuit?
- A.
1
- B.
2
- C.
3
- D.
4
- 14.How many paths are there in a series circuit?
- A.
1
- B.
2
- C.
3
- D.
4
- 15.Tech A says parallel circuits are like links in a chain. Tech B says total current in a parallel circuit equals the sum of the current flowing in each branch of the circuit. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 16.Tech A says in a parallel circuit, the more branches that are added, the more current flow increases. Tech B says a series-parallel circuit is made of parallel circuits only. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 17.A switch is used to:
- A.
Protect a circuit.
- B.
Allow current to flow only one way.
- C.
Reduce the current flow.
- D.
Turn current flow on and off.
- 18.Tech A says relays are turned on and off by a small amount of current. Tech B says there are two types of relays: normally closed (NC) and normally open (NO) types. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 19.Tech A says a solenoid is not used on modern automobiles. Tech B says fuel injectors and starter motor solenoids are two of many solenoids used on modern automobiles. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 20.What are the three types of resistors?
- A.
Rheostats, potentiometers, thermistors
- B.
Fixed, fluid, thermistors
- C.
Round, square, triangle
- D.
Thermistors, negative temperature coefficient (NTC) thermistor resistance, positive temperature coefficient (PTC) thermistor resistance
- 21.Tech A says wire size is very important. Tech B says there are two scales used to measure wire size. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 22.Tech A says copper has a low resistance. Tech B says the length of wire doesn't affect resistance. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 23.
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 24.Controlled area network bus (CAN-bus) systems carry:
- A.
Children.
- B.
High-speed data.
- C.
Very slow data.
- D.
Info for the cruise control.
- 25.Controlled area network bus (CAN-bus) systems should be checked using a(n):
- A.
Power probe
- B.
Analog meter
- C.
Test light
- D.
Digital multimeter
- 26.All of the following could cause a slow cranking condition EXCEPT:
- A.
Over-advanced ignition timing
- B.
Shorted neutral safety switch
- C.
Misaligned starter mounting
- D.
Low battery state of charge
- 27.During an output test using the full field method, a 100 ampere alternator with an integral regulator produces 60 amps. The cause of the low alternator output could be a(n):
- A.
Shorted diode in the alternator
- B.
Broken brush lead wire in the alternator
- C.
Open circuit in the voltage regulator
- D.
Defective alternator capacitor
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